The top mistakes in A Grand Day Out with Wallace and Gromit http://www.moviemistakes.com/film5403 en Sat, 06 Sep 2008 05:55:25 +0000 99603 The first time you see Gromit making a house of cards, there are only three triangles (not including the ones with the point facing down), later, when it shows the house of cards a second time (and Gromit has already finished the second level), the first level now has four triangles and the second layer has three.